I am using Dovecot 2.3.4.1 with sdbox and mostly Thunderbird on Linux and FairEmail on Android as IMAP clients.
I use a defined set of IMAP keywords to allow different users to mark and filter their mails based on keywords. That works pretty well but I stumble across an issue from time to time: In TB I can pre-define a list of keywords which the user can choose one from. FairEmail shows all those keywords Dovecot presents - there is nothing like the list in TB. Issue 1: If there are no mails flagged in a folder, Dovecot doesn't present any keywords and therefore FairEmail shows none - the user has to remember and type in the correct keyword. Issue 2: After some time FairEmail shows a huge list of keywords for the INBOX, even keywords not in use for quite some time. To get rid of these keywords I deleted the index files on Dovecot (which with sdbox are not meant to be deleted?). It seems, Dovecot caches the keywords in the index files. Question: 1) Is there a way on Dovecot to define a list of keywords Dovecot presents to the IMAP clients? 2) If not, is there a nicer way to clean the keyword lists from old entries not assigned to any mail in that folder? -- Cheers spi
